Gas-burner.



W. L. BROOKS.y

GAS BURNER. Amm/mou min mmzz, 1911.v

Patented Apr. 16, 191s.

Yse

En sra i: arm onirica WILLIAM L. BROOKS, 0F ABDMORE, OKLAHOMA.

GAS-BURNER.

I Application filed June 12, 1917. Serial No. 174,349.

One of the primary objects of my pres,

ent invention consists in the provision of a novel form of adjustment for regulating the flame of the burner so as to insure the most perfect Vcombustion of the gasand to obtain.

a steady fumeless blue flame withany gas and with any gas pressure.

I have found in the manufacture of gas burners that, because of the different heating values per cubic foot of various fuel gases, different proportions of air and gas are required and for this reason burners are frequently constructed in which .the amount of air supplied may be varied to suit the gas employed, although the rate of ow of gas is kept constant.` 'One of the objects of this invention resides in providing a novel adjustment for the burner in Which'the amount of air supplied is kept constant, while the flow of gas is varied to suit the particular conditions under which the burner is employed. In other words, I adjust the amount of gas to the amount of air making up the fuel mixture instead of adjusting the amount of air to the gas.

A-still further object of my invention resides in so constructing the burner, including its adjustable parts, that it may be read- 1ly assembled and easily adjusted from time to tune as may be neceary, the adjustment being accomplished by merely turning the burner tube.

With these and other objects in View, my invention will be more fully described, illustrated'in the accompanying drawing, and then specifically pointed out in the claim.

In the drawmg:

Figure 1 is a fragmentary elevation of a conventionalform of'. gas heater, showing a number of my burners in use;

` Fig. 2 is a vertical central sectional vie taken through one of the'burners;

F 3 is a vertical sectional view taken at right angles to that of Fig. 2 and Show7 V-of peripherally spaced ing a somewhat modified form of burner structure. e

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawing by .the same reference characters. v

In order to insure a clear and accurate understanding of my invention, have illustrated it in connection with a conventional form of gas heater 10 including the body 11 which is open at its front and across which, near the bottom, is extended the gas supply pipe 12 and above this pipe the burner plate 13 which forms the bottom of the combustion chamber of the heater and which supports the burner tubes which project through it, as will be later explained.

For an understanding of the burner construction, attention is directed particularly to Fig. 2 of the drawing. As there shown, my improved burnerincludes a cylindrical burner tube 14 of uniform diameter throughout its length and provided adjacent its lower end with diametrically opposed air inlet openings 15. Seated in the lower end of this tube is a sleeve 16 internally threaded at its lower end, as shown at 17, and closed at its upper end, save for a frusto-conical passage 18 providing a valve seat. Coperating with this sleeve and valve seat is a nozzle valve 19 which has a cylindrical externally threaded tubular body formed intermediate its length with an enlargement having angular faces 20 to receive a `wrench or other tool. One end of this body is threaded into a fuel supply pipe 12 of the heater or stove with which the burner is to be employed and its opposite end is threaded into the lower open end of the sleeve 16. This latter end of the body is tapered to provide a conical needle valve 21 which coperates with the passagert or valve seat 18, and intermediate the length of the tapered terminal of the valve nozzle 19 such nozzle is formed with a plurality s outlet passages 22. The sleeve and nozz e valve are so proportioned that the fuel passage 18 is spaced slightly below the air inlet passages 15 so that gas passing through the openings 22 of the nozzle and through the passage 18 about the needle valve will immediately be mixed v In installing this burner, the nozzle valve 19 is threaded into the supply pipe and the sleeve, already inserted in the tube 14, is threaded about the nozzle valve so that the needle valve 21 will partially close the gas passage 18. Jl/'ith the gas turned on, the mixture of gas and air escaping from the upper end of the burner tube is then ignited, after which the burner may be setto provide the proper mixture of air and gas by turning the sleeve in one direction or the other to permit passage of more or less gas to the burner tube until the proper proportion ot gas with respect to air is obtained.

In Fig. 3 l have illustrated a slightly modified form of construction in which the sleeve 16, corresponding to the sleeve 16, is threaded into the lower end of the burner tube and is provided at its outer end with a milled or angularly faced shoulder 23 by means of which itmay be turned to adjust it longitudinally of the tube. By this means, the 'sleeve may be adjusted to bring its gas passage a more or less distance from the air inlet passages 15 of the burner tube. @therwise, the construction is the same as that previously described.

It will be seen that the adjustment of the burner is very simple, being accomplished merely by turning the burner tube in one direction or the other. In a gas heater of the type shown in Fig. 1, the body of the heater below the burner plate 13 is usually closed. `With my burner, however, adjustment of the burner may be made without opening up this portion of the heater as the tubes may be readily turned by grasping their upper ends which project slightly through the burner plate.

Although l have .illustrated and described my invention in all its details of construction, it will of course be understood that I do not wish to be limited to such details, but reserve the right to make any changes, within the scope of the appended claim, without inthe slightest degree departing from the spirit of my invention.

Having thus described the invention, what is claimed as nev.7 is:

ln a. gas burner, a burner tube provided adjacent one end with air inlet openings, a sleeve fitted in such end of the tube and having a closed head disposed below the openings formed with a frusto-conical passage, and a tubular valve nozzle threaded into the sleeve and including a conical terminal eoi'perating with the passage and provided with gas outlet openings, all of the openings being` so formed that when the nozzle is brought into seating engagement with the passage all How of gas will be checked, the nozzle exteriorly of the sleeve being formed with an angularly faced flange and below the iiange with an externally threaded terminal for -threaded application into a fuel supply pipe.

ln testimony whereof l atliX my signature.

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